Duke, Duchess Kate Send Pregnancy Thank-You Cards

When you're flooded with fetal felicitations, what's the world's most famous expectant couple to do?

The polite and proper thing, of course.

Overwhelmed by well-wishers, the Duke and Duchess of Cambridge (well, their office at St. James's Palace, really) have begun sending out thank-you cards:

"The Duke and Duchess of Cambridge were touched by your kind words following the wonderful news that they are expecting their first baby. It really was most thoughtful of you and Their Royal Highnesses send you their warmest thanks and best wishes."

The front of the postcard-style mail piece features a picture of William and Kate during last year's trip to Singapore, with the duchess wearing pale Jenny Packham and clutching a bouquet of purple orchids.